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Aktuelle Fachpublikationen

Chemical sensing with 2D materials

During the last decade, two-dimensional materials (2DMs) have attracted great attention due to their unique chemical and physical properties, which make them appealing platforms for diverse applications in opto-electronic devices, energy generation and storage, and sensing. Among their vari ... mehr

Atomic hydrogen interactions with gas-phase coronene cations: hydrogenation versus fragmentation

Sequential hydrogenation of polycyclic aromatic hydrocarbon (PAH) cations drives a gradual transition from a planar to a puckered geometry and from an aromatic to an aliphatic electronic structure. The resulting H-induced weakening of the molecular structure together with the exothermic nat ... mehr

Silver(I)-catalyzed sequential hydroamination and Prins type cyclization for the synthesis of fused benzo--sultams

An intramolecular annulation strategy has been developed for the synthesis of tetrahydrobenzo[e]pyrano[4,3-c][1,2]thiazine derivatives by means of coupling of aldehydes with 2-(4-hydroxybut-1-yn-1-yl)-N-arylsulfonamides using a catalytic amount of silver hexafluoroantimonate in toluene at 8 ... mehr

Effect of copolymer sequence on structure and relaxation times near a nanoparticle surface

We simulate a simple nanocomposite consisting of a single spherical nanoparticle surrounded by coarse-grained polymer chains. The polymers are composed of two different monomer types that differ only in their interaction strengths with the nanoparticle. We examine the effect of adjusting co ... mehr

An efficient iodine pentoxide-triggered iodocarbocyclizations for the synthesis of iodooxindoles in water

An efficient iodocarbocyclization of alkenes for the synthesis of iodooxindoles has been developed. This reaction proceeds in a chemoselective manner and shows excellent tolerance of various functional groups, including a chemosensitive hydroxymethyl group. Nonmetal inorganic iodine pentoxi ... mehr

Alle Fachpublikationen

Design Concepts in Absorbance Optical Systems for Analytical Ultracentrifugation

Analytical ultracentrifugation is a powerful technique for analyzing particles in solution, and has proved valuable for a wide range of applications in chemistry, biochemistry and material sciences for many years. The field is presently seeing a resurgence of instrument development from com ... mehr

A novel mechanism for user-friendly and self-activated microdroplet generation capable of programmable control

Unlike conventional approaches that require bulky and expensive pumping equipment, herein, we present a simple method for self-activated microdroplet generation and transport inside a long microchannel. The high gas-pressure in the syringes is used to provide the built-in power of self-prim ... mehr

Correction: Noncompetitive homogeneous immunodetection of small molecules based on beta-glucuronidase complementation

Correction for ‘Noncompetitive homogeneous immunodetection of small molecules based on beta-glucuronidase complementation’ by Jiulong Su et al., Analyst, 2018, 143, 2096–2101. mehr

Evaluation of an improved closed-vessel conductively heated digestion system for the analysis of raw meat samples by ICP techniques

In this work, an improved conductively-heated digestion system (CHDS) with closed-vessels, which provides simpler, easier and safer digestions of raw chicken, beef and pork meat samples aiming for Ca, Cu, Fe, K, Mg, Mn, Na, P, S, and Zn determinations by ICP OES and As, Cd, Cr, Mo, Pb and S ... mehr

Distance–based Paper Sensor for Determination of Chloride ion Using Silver Nanoparticles

We report the first development of a distance-based paper sensor for a simple, inexpensive, instrument-free, and portable determination of chloride ions. Our analysis reaction is based on the oxidative etching of silver nanoparticles (AgNPs) to form AgCl in the presence of Cl⁻ and H2O2. The ... mehr

Alle Fachpublikationen zu Analytik

Chemical sensing with 2D materials

During the last decade, two-dimensional materials (2DMs) have attracted great attention due to their unique chemical and physical properties, which make them appealing platforms for diverse applications in opto-electronic devices, energy generation and storage, and sensing. Among their vari ... mehr

Atomic hydrogen interactions with gas-phase coronene cations: hydrogenation versus fragmentation

Sequential hydrogenation of polycyclic aromatic hydrocarbon (PAH) cations drives a gradual transition from a planar to a puckered geometry and from an aromatic to an aliphatic electronic structure. The resulting H-induced weakening of the molecular structure together with the exothermic nat ... mehr

Silver(I)-catalyzed sequential hydroamination and Prins type cyclization for the synthesis of fused benzo--sultams

An intramolecular annulation strategy has been developed for the synthesis of tetrahydrobenzo[e]pyrano[4,3-c][1,2]thiazine derivatives by means of coupling of aldehydes with 2-(4-hydroxybut-1-yn-1-yl)-N-arylsulfonamides using a catalytic amount of silver hexafluoroantimonate in toluene at 8 ... mehr

Effect of copolymer sequence on structure and relaxation times near a nanoparticle surface

We simulate a simple nanocomposite consisting of a single spherical nanoparticle surrounded by coarse-grained polymer chains. The polymers are composed of two different monomer types that differ only in their interaction strengths with the nanoparticle. We examine the effect of adjusting co ... mehr

An efficient iodine pentoxide-triggered iodocarbocyclizations for the synthesis of iodooxindoles in water

An efficient iodocarbocyclization of alkenes for the synthesis of iodooxindoles has been developed. This reaction proceeds in a chemoselective manner and shows excellent tolerance of various functional groups, including a chemosensitive hydroxymethyl group. Nonmetal inorganic iodine pentoxi ... mehr

Alle Fachpublikationen zu Chemie

Lack of plakoglobin impairs integrity and wound healing in corneal epithelium in mice

We generated cornea-specific plakoglobin (Jup; junctional plakoglobin) knockout mice in order to investigate the function of plakoglobin on the maintenance of the homeostasis of corneal epithelium in mice. Cornea epithelium-specific conditional knockouts (Jup CEΔ/CEΔ ... mehr

Lack of plakoglobin impairs integrity and wound healing in corneal epithelium in mice

We generated cornea-specific plakoglobin (Jup; junctional plakoglobin) knockout mice in order to investigate the function of plakoglobin on the maintenance of the homeostasis of corneal epithelium in mice. Cornea epithelium-specific conditional knockouts (Jup CEΔ/CEΔ ... mehr

Characterization of smooth muscle cells from human atherosclerotic lesions and their responses to Notch signaling

Atherosclerosis is the most common cause of heart disease and stroke. The use of animal models has advanced our understanding of the molecular signaling that contributes to atherosclerosis. Further understanding of this degenerative process in humans will require human tissue. Plaque remove ... mehr

BMP-2 restoration aids in recovery from liver fibrosis by attenuating TGF-β1 signaling

Transforming growth factor-β (TGF-β) plays a central role in hepatic fibrogenesis. This study investigated the function and mechanism of bone morphogenetic protein-2 (BMP-2) in regulation of hepatic fibrogenesis. BMP-2 expression in fibrotic liver was measured in human tissue microarray and ... mehr

S100A4 protects mice from high-fat diet-induced obesity and inflammation

As a member from S100 calcium-binding protein family, S100A4 is ubiquitous and elevated in tumor progression and metastasis, but its role in regulating obesity has not been well characterized. In this study, we showed that S100A4 was mainly expressed by stromal cells in adipose tissue and t ... mehr

Alle Fachpublikationen zu Labortechnik

Production of Biodiesel Catalysed by Lipase from Thermomyces Lanuginosus in its Soluble Form

Abstract Biodiesel production through the transesterification of oleaginous sources utilizing alkaline catalysts shows many process drawbacks like the need of a raw material with high purity degree and a high amount of alkaline wastewater generated from the biodiesel washing step. Such ... mehr

An Integral Criterion for Turbulence Suppression in Swirling Flows

ABSTRACT A numerical study of flow in rotating pipes was conducted to elucidate the relative importance of convection and turbulence. CFD (Computational Fluid Dynamics) simulations of flow inside a rotating pipe (D = 2 cm and L/D = 20) were carried out, using the Reynolds Stress Model, ... mehr

An Integral Criterion for Turbulence Suppression in Swirling Flows

ABSTRACT A numerical study of flow in rotating pipes was conducted to elucidate the relative importance of convection and turbulence. CFD (Computational Fluid Dynamics) simulations of flow inside a rotating pipe (D = 2 cm and L/D = 20) were carried out, using the Reynolds Stress Model, ... mehr

Estimation of methane yields in continuous biogas reactors using kinetic and mass flow models

Abstract The measurement of methane potential during anaerobic digestion has generally been accomplished through batch assays, yet the majority of industrial plants employ a semi‐continuous feeding regime and the estimation of continuous process yield from batch data is not straightforwa ... mehr

TWO‐STAGE DRY ANAEROBIC DIGESTION PROCESS CONTROL OF BIOWASTE FOR HYDROLYSIS AND BIOGAS OPTIMIZATION

Abstract This study offers an advanced management system which adapts to most of the two‐stage anaerobic dry treatment plants that do not benefit from a local expert in biowaste treatment. This approach takes advantage of pH sensors to control the process within the optimal range to enha ... mehr

Alle Fachpublikationen zu Verfahrenstechnik

On the Degradation Pathway of Glyphosate and Glycine

The degradation in water of the most widespread herbicide, glyphosate, is still under debate. Experimental disagreements on this process exist and there are only a few theoretical studies to support any conclusions. Moreover, the relationship between glyphosate and glycine is underestimated ... mehr

Emerging Investigator Series: Sunlight Photolysis of 2,4-D Herbicides in Systems Simulating Leaf Surfaces

Pesticides are commonly applied on foliage, forming dry deposits on the leaf cuticular wax. However, their photochemical transformation in this lipophilic environment is much less understood compared with that in surface water. In this work, sunlight photolysis of six chlorinated phenoxyace ... mehr

Sustainability, Vol. 10, Pages 2262: Energy-Efficient Learning System Using Web-Based Panoramic Virtual Photoreality for Interactive Construction Safety Education

Sustainability, Vol. 10, Pages 2262: Energy-Efficient Learning System Using Web-Based Panoramic Virtual Photoreality for Interactive Construction Safety Education Sustainability doi: 10.3390/su10072262 Authors: Hai Chien Pham Nhu-Ngoc Dao Jung-Ui Kim Sungrae Cho Chan-Sik Par ... mehr

Sustainability, Vol. 10, Pages 2263: Seasonal Spatial Activity Patterns of Visitors with a Mobile Exercise Application at Seoraksan National Park, South Korea

Sustainability, Vol. 10, Pages 2263: Seasonal Spatial Activity Patterns of Visitors with a Mobile Exercise Application at Seoraksan National Park, South Korea Sustainability doi: 10.3390/su10072263 Authors: Jinwon Kim Brijesh Thapa Seongsoo Jang Eunjung Yang Visitors& ... mehr

Sustainability, Vol. 10, Pages 2264: Analyses of Distributed Generation and Storage Effect on the Electricity Consumption Curve in the Smart Grid Context

Sustainability, Vol. 10, Pages 2264: Analyses of Distributed Generation and Storage Effect on the Electricity Consumption Curve in the Smart Grid Context Sustainability doi: 10.3390/su10072264 Authors: Simona-Vasilica Oprea Adela Bâra Adina Uță Alexandru Pîrjan George Căruța ... mehr

Alle Fachpublikationen zu Umwelttechnik
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